IE911011A1 - NOVEL DERIVATIVES OF¹4H-PYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE THEIR PROCESS¹OF PREPARATION AND THE PHARMACEUTICAL COMPOSITIONS¹CONTAINING THEM - Google Patents

Abstract

New 4H-pyrrolo[1,2-a]thieno[2,3-f]diazepine[1,4] compounds capable of being employed as medication and corresponding to the general formula (I): …… in which:… - R1, R2, R3 and R4 have the same meaning as in the claims. …These compounds and their physiologically tolerable salts can be employed in therapeutics, especially in the treatment of disorders linked with hypoxaemia and with certain metabolic disorders.

Description

The present invention relates to novel 4Hpyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine compounds, to their process of preparation and to the pharmaceutical compositions containing them.

It relates especially to the 4H-pyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine compounds of general formula in which: - Rx represents: - a hydrogen atom, - a hydroxyl radical, - a radical of general formula: -OR5 or -SR5 in which Rs represents: . an alkyl radical containing 1 to 5 carbon atoms in a straight or branched chain, optionally substituted with a phenyl radical or with a group of formula -COOB in which B represents a hydrogen atom or an alkyl radical containing 1 to 5 carbon atoms, or . an aryl radical such as, for example, a phenyl radical, - a radical of general formula: - CH2 - C - Re or - CH2 - CH - Re 0 OH in which Re represents: . a linear or branched alkyl radical having 1 to 5 carbon atoms, . an aryl radical (optionally substituted with one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups), . an aralkyl radical having 7 to 9 carbon atoms (optionally substituted on the aromatic ring with - 2 one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups), - a radical of formulas r7 r8 in which: . R7 and Re, which may be identical or different, each represent a hydrogen atom, an alkyl radical containing 1 to 5 carbon atoms in a straight or branched chain, a cycloalkyl radical containing 3 to 5 carbon atoms, an aryl radical (optionally substituted with one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups) or an aralkyl radical having 7 to 9 carbon atoms (optionally substituted on the aromatic ring with one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups), or . R7 and R8, together with the nitrogen atom to which they are linked, form a five- or sixmembered heterocyclic radical optionally containing another hetero atom such as, for example, a second nitrogen atom or an oxygen atom, and optionally substituted with a linear or branched alkyl radical having 1 to 5 carbon atoms, with an alkoxycarbonyl radical having 2 to 6 carbon atoms or with an aryl radical, an aralkyl radical having 7 to 9 carbon atoms, a heteroaryl radical or a diaralkyl radical such as, for example, a benzhydryl radical (these radicals optionally being substituted on the aromatic ring or rings with one or more identical or different substituents selected from halogen, hydroxyl, alkyl or alkoxy having 1 to 4 carbon atoms, nitro or trifluoromethyl), - 3 an alkyl radical containing 1 to 5 carbon atoms, optionally substituted with one or more radicals selected from the group composed of hydroxyl, oxo and cyano radicals and alkoxycarbonyl radicals containing 2 to 4 carbon atoms; - R2 represents: - a hydrogen atom, - an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, - an arylsulfonyl radical in which the aryl group is optionally substituted with an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, - an alkyl carbonyl radical having 2 to 3 carbon atoms, - a radical of general formula: - CNHR9 a in which . Rg represents a linear or branched alkyl radical having 1 to 6 carbon atoms or an aryl radical or aralkyl radical having 7 to 9 carbon atoms (optionally substituted on the aromatic ring with one or more halogen atoms, alkoxy radicals having 1 to 3 carbon atoms or trifluoromethyl radicals); - R3 and RA represent: - each simultaneously a hydrogen atom or - together an oxygen atom.

Depending on the meaning of Rx, the derivatives of general formula (I) possess one or more asymmetric carbon atoms and, as a result, give rise to isomers or diastereoisomers which are also included in the present invention.

The prior art in this field is illustrated, in particular, by: Heterocycles vol. 12 No. 8, pages 1009-1011, (1979), Tetrahedron letters No. 7, pages 643-644, (1979), and J. Heter. Chem., 14 No. 2, pages 235-240, (1977), which mention pyrrolo[l,2-a]thieno[3,2-f][l,4]diazepine derivatives not including or in any way suggesting the compounds of the present invention.

The latter, which are pyrrolo[l,2-a]thieno[2,3-f] [l,4]diazepine derivatives of novel structure, possess advantageous pharmacological properties. They interfere, in particular, with central benzodiazepine receptors of the peripheral type and exert a pronounced antihypoxic effect, thereby enabling them to be used in the treatment of ischemic syndromes of any localization, acute, transient or progressive, and in the correction of disorders linked to hypoxemia, for example during cerebral ageing.

They also possess substantial hypocholesterolemic, hypotriglyceridemic, hypolipidemic and hypoglycemic properties which make them valuable in the treatment of a large number of pathological disorders.

The subject of the present invention is also the process for preparing the compounds of general formula (I), wherein: A - either 2-aminocarbonyl-3-(2-formyl-l-pyrrolyl)thiophene of formula (II): is treated 1) either with a mixture of water and triethylamine, to give the compound of formula (la): H (la) - 5 10 2) or with an alcohol or a thiol of respective general formulae (III) and (IV): R5OH (III), RsSH (IV) in which R5 has the same meaning as in the compounds of general formula (I), to give the compounds of general formulae (lb) and (Ic), respectively: Ο») (ic, in which R5 has the meaning defined above; 3) or with a secondary amine of general formula (V): (V) in which R7 and Rs have the same meanings as in the compounds of general formula (I), to give the compounds of general formula (Id): R7 R8 (Id) H in which R7 and R8 have the same meanings as in the compounds of general formula (I); 4) or in an alkaline medium with a methyl ketone of general formula (VI): - 6 (VI) CH, - C - R6 ¢) in which R6 has the same meaning as in the compounds of general formula (I), so as to obtain the compounds of general formula (If): (If) in which Re has the same meaning as in the compounds, of general formula (I), which can optionally be treated with a sodium borohydride to obtain the compounds of general formula (Ig)s (ig) in which Rq has the same meaning as in the compounds of general formula (I); B - or the compound of general formula (Ia) obtained above is treated: 1) either with an alcohol of general formula (III) defined above, to give the compounds of general (lb) - 7 in which R5 has the same definition as in the compounds of general formula (I); 2) or with an amine of general formula (V) defined above, to give the compounds of general formula (Id): «7 R8 (Id) in which R7 and Re have the same meanings as in the. compounds of general formula (I), which can optionally be treated with sodium borohydride to obtain the compound of formula (Ie): (ie) which can optionally be reacted: a) either with an anhydride of general formula (XI) ; *'2 - R' (XI) in which R'z represents a methyl or ethyl radical, so as to obtain the compounds of general formula (II): SE 911011 in which R'2 has the meaning defined above; b) or with an isocyanate of general formula (XII): Rg - N = C = 0 (XII) in which Rg has the same meaning as in the compounds of general formula (I), so as to obtain the compounds of general formula (Im): in which Rg has the same meaning as in the compounds of general formula (I); 3) or, in an alkaline medium with a methyl ketone of general formula (VI) defined above, to give the compounds of general formula (If): (If) in which R6 has the same meaning as in the compounds of general formula (I); 4) or, in the presence of triethylamine, with a compound of general formula (VII): Alk-C-CH,-C-OAlk ‘ -C-CH,-C ft ft (VII) in which Aik and Aik', which may be identical or different, each represent an alkyl radical having 1 to 3 carbon atoms, to give the compounds of general formula (Ih): (Ih) in which Aik and Aik' have the meanings defined above; ) or, in the presence of triethylamine, with a compound of general formula (VIII): ,CN H2C, s' C-OAlk II o (VIII) -10in which Aik has the meaning defined above, to give the compounds of general formula (Ii): (Ii) in which Aik has the meaning defined above; 6) or with LiAlH*, to give the compound of formula (Ij )« (Ij) which, when treated a) either with a stoichiometric amount of an inorganic or organic acid, gives the corresponding acid-addition salt; b) or with an alkyl iodide of general formula (IX): R2 I (IX) in which Rn2 represents an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, gives, depending on the stoichiometric ratio (IX)/(Ij): either the compound of general formula (IkJ: in which R2 has the meaning defined above, or the dialkylammonium iodide of general formula (in) in which R2 has the meaning defined above; c) or with a halogenated compound of general formula (X): Hal-R'2 (X) in which R'2 represents an arylsulfonyl radical in which the aryl group is optionally substituted with an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, gives the compounds of general formula (Ik2): - 12 in which R'2 has the meaning defined above.

All the compounds of formula (la) to (Im) are comprised within the compounds of general formula (I).

The compounds of general fomula (I) give rise to 5 salts with physiologically tolerable acids. These salts are also included in the present invention.

The compounds of the present invention, as well as their salts, possess advantageous pharmacological and therapeutic properties, in particular potent antihypoxic activity as well as substantial metabolic properties.

During ageing or following a stroke, increased frailty and cell vulnerability are physiopathological components of importance in the search for new therapies directed towards protecting the brain placed in a posi15 tion of inability to respond to any further stress emanating from its environment.

Such a stress may be reproduced in the form of a defective oxygen supply, and for this reason, in terms of their consequences, there is a close analogy between hypoxia and cerebral ageing.

The compounds of the present invention were tested for their capacity to prolong survival of the cerebral tissue during acute hypoxia in mice. These tests demonstrated that the compounds of the invention have a very potent antihypoxic protective effect, and thus confirmed the great value of their use in therapy.

By clearly counteracting brain death during insufficiency of the oxygen supply, the compounds of the present invention exert a pronounced antihypoxic effect and are hence useful in the case of ischemic syndromes of any localization, acute, transient or progressive, since they exert their pharmacological properties with respect to the oxygen deficiency which accompanies these mishaps. Their pharmacological properties enable them to be applied in the correction of disorders linked to hypoxemia, for example during cerebral ageing.

The compounds of the invention also possess exceptional metabolic properties, being strongly - 13 hypolipidemic, hypocholesterolemic, hypotriglyceridemic and hypoglycemic.

When given for 15 days to rats subjected to a hypercholesterolemic diet, they proved to be much more active (at least 30-fold) than clofibrate with respect to the lowering of the plasma triglyceride, cholesterol and HDL (high density lipoprotein)-cholesterol levels.

Moreover, the compounds of the present invention exhibit good hypotensive properties in animals at a dose of 30 mg/kg I.P.

The compounds of general formula (I), as well as their addition salts with a pharmaceutically acceptable inorganic or organic acid such as, for example, hydrochloric, methanesulfonic, citric and maleic acids, may be made into pharmaceutical preparations according to generally known processes, such as, for example, into tablets, hard gelatin capsules, dragees, solution for oral administration, injectable solution, suspensions for oral administration, emulsions and suppositories.

Apart from non-toxic and pharmaceutically acceptable inert excipients such as, for example, distilled water, glucose, lactose, starch, talc, vegetable oils, ethylene glycol, and the like, these preparations can also contain preservatives, stabilizers, wetting agents, emulsifiers, and the like.

The compositions thereby obtained generally take the form of measured doses, and can contain, depending on the conditions treated and on the patient's age and sex, from 0.1 to 100 mg of active principle. Depending on the circumstances, they may be administered orally, rectally or parenterally, at a dose of 0.1 to 100 mg from one to several times a day.

The examples which follow illustrate the invention and in no way limit it.

The NMR parameters relating to the derivatives exemplified are collated in Tables I - VIII. - 14 EXAMPLE 1: 6-HYDROXY-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1, 2a]THIENO[2,3-f][1,4]DIAZEPINE: A suspension of 1.5 g (0.0068 mol) of 2-amino5 carbonyl-3-(2-formyl-l-pyrrolyl)thiophene in 30 ml of water and 0.75 ml of triethylamine is stirred at room temperature for 2 hours. The precipitate formed is drained, washed with water and recrystallized in ethyl ether. 1 g of 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine is obtained in the form of yellow crystals, melting point 172’C.

Yield : 67% Elemental analysis : C% H% N% S% Calculated 54.53 3.66 12.72 14.56 Found 53.78 3.48 13.09 14.85 IR spectrum (KBr) : OH band at 3520 cm'1 NH bands at 3420 and 3280 cm CO band at 1640 cm1 - main bands 1145, 870, at 1550, 1500, 1450, 1320, 1200, 765 and 720 cm-1. - 15 EXAMPLE 2 s 6-METHOXY-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2a]THIENO[2,3-f][1,4JDIAZEPINE: C-N II I H First method : A suspension of 1 g (0.0045 mol) of 2-aminocarbonyl-3-(2-formyl-l-pyrrolyl)thiophene in 30 ml of methanol is heated to reflux for one hour. The methanol is then removed under vacuum and the solid residue recrystallized in methanol. 0.97 g of 6-methoxy-5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine is obtained in the form of white crystals, melting point 172“C.

Yield s 92% Elemental analvsis • • 15 C% H% N% S% Calculated 56.39 4.30 11.95 13.68 Found 56.62 3.99 11.81 13.32 IR spectrum (KBr) : - NH band at 3250 cm'1 - CH bands at 3100, 2930 and 2830 cm'1 - CO band at 1650 cm'1 - main bands at 1550, 1440, 1315, 1150, 1045, 730 and 715 cm'1.

Second method s Using the procedure described in the first method and starting with 1 g (0.0045 mol) of 6-hydroxy-5,6dihydro-4-oxo-4H-pyrrolo[ 1,2-a]thieno [ 2,3-f ] [ 1,4 jdiazepine in 30 ml of methanol, 1 g of 6-methoxy-5,6-dihydroit 911011 - 16 4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine is obtained.

Yield : 95% The infrared spectrum of the compound thereby 5 obtained is coincident with that of the compound prepared by the first method.

EXAMPLES 3-6 : Using procedures similar to that described in Example 2, the following derivatives were prepared: (In all cases, irrespective of the preparation method used, the infrared spectra of the compounds obtained are coincident.) 3) 6-ETHOXY-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 148*C (ethanol), Elemental analvsis • • C% H% N% S% Calculated 58.05 4.87 11.28 12.91 Found 57.83 4.80 11.20 12.79 IR spectrum (KBr) : - NH bands at 3260 and 3180 cm'1 - CH bands at 3060, 2970, 2930 and 2870 cm'1 - CO band at 1635 cm1 - main bands at 1550, 1500, 1440, 1325, 1235, 1045, 960, 735 and 715 cm'1, from: a) 2-aminocarbonyl-3-(2-formyl-1-pyrrolyl)thiophene and ethanol, in an 86% yield, and b) 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2— a]thieno[2,3-f][1,4]diazepine and ethanol, in an 89% yield. - 17 4) 6-PROPOXY-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white needles, melting point 164*C (ethyl ether), Elemental analysis • • 5 C% H% N% S% Calculated 59.52 5.38 10.68 12.22 Found 59.59 5.33 10.72 12.08 IR spectrum (KBr) : - NH band at 3300 cm*1 - CH bands at 3120, 2960, 2940 and 2880 cm'1 - CO band at 1645 cm*1 - CN band at 1605 cm*1 - main bands at 1500, 1450, 1325, 1150, 1060, 740 and 720 cm*1, from: a) 2-aminocarbonyl-3-(2-formyl-l-pyrrolyl) thiophene and propanol, in a 75% yield, and b) 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[l,2a]thieno[2,3-f][1,4]diazepine and propanol, in an 80% yield. ) 6-(1-METHYLETHOXY)-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 160 °C (isopropanol), Elemental analysis : C% H% N% S% Calculated 59.52 5.37 10.67 12.22 Found 59.44 5.30 10.62 12.06 IR spectrum (KBr) : - NH bands at 3260 and 3170 cm*1 - CH bands at 3100, 3050, 2960 and 2880 cm*1 - CO band at 1640 cm*1 - main bands at 1550, 1500, 1460, 1440, 1325, 1110, 1020, 805 and 720 cm*1, from: - 18 a) 2-aminocarbonyl-3-(2-formyl-l-pyrrolyl)thiophene and isopropanol, in a 80% yield, and b) 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2a]thieno[2,3-f][l,4]diazepine and isopropanol, in an 76% yield. ) 6-BENZYLOXY-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 179’C (ethyl ether), Elemental analysis : C% H% N% S% Calculated 65.79 4.55 9.02 10.33 Found 65.31 4.71 9.22 10.66 IR spectrum fKBrl : - NH bands at 3270 and 3190 cm1 - CH bands at 3060, 2940 and 2880 cm1 - CO band at 1645 cm'1 - main bands at 1540, 1495, 1450, 1320, 1205, 1015, 795 and 735 cm1, from: a) 2-aminocarbonyl-3-(2-formyl-1-pyrroly1)thiophene and benzyl alcohol, in a 60% yield, and b) 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2a]thieno[2,3-f][l,4]diazepine and benzyl alcohol, in a 64% yield.

EXAMPLE 7 : 6-METHOXYCARBONYLMETHYLMERCAPTO-5,6-DIHYDRO-4OXO-4H-PYRROLO[1,2-a]THIENO[2,3-f][1,4 JDIAZEPINE: H IE 911 ΟΤΙ - 19 A solution of 0.7 g (0.0032 mol) of 2-aminocarbonyl-3-(2-formyl-l-pyrrolyl)thiophene in 80 ml of acetonitrile is treated with 0.3 ml (0.0035 mol) of methyl thioglycolate. The reaction mixture is stirred at room temperature for 12 hours. The acetonitrile is then removed under vacuum. The residual oil which crystallizes on addition of petroleum ether is recrystallized. 0.65 g of 6-methoxycarbonylmethylmercapto-5,6dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f] [1,4]- diazepine is obtained in melting point 158 °C (ethyl the form of ether). white crystals Yield : 68% Elemental analvsis • • C% H% N% S% 15 Calculated 50.64 3.92 9.08 20.79 Found 50.55 3.67 8.97 20.71 IR spectrum (KBr) : - NH bands at 3270 and 3160 cm'1 - CH bands at 3050, 3010 and 2920 cm'1 - CO bands at 1715 cm1 (ester) and 1645 cm'1 (lactam) - main bands at 1545, 1490, 1450, 1440, 1310, 1220, 1145, 755 and 720 cm1.

EXAMPLES 8-9 : Using procedures similar to that described in Example 7, the following derivatives were prepared: ) 6-PHENYLMERCAPTO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white needles, melting point 178*C (ethyl ether), Elemental analysis • • C% H% N% S% Calculated 61.51 3.87 8.97 20.52 Found 61.70 3.96 9.10 20.54 IR spectrum (KBr) : - NH bands at 3270 and 3160 cm’1 - CH bands at 3180 and 3010 cm’1 - CO band at 1645 cm'1 - main bands at 1550, 1500, 1480, 1440, 1395, 1330, 1065, 775, 720 and 690 cm'1, from 2-aminocarbonyl-3-(2-formyl-1-pyrrolyl)thiophene and thiophenol, in a 72% yield. ) 6-CARBOXYETHYLMERCAPTO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 190’C (ethyl ether), Elemental analysis : C% H% N% S% Calculated 50.64 3.92 9.08 20.79 Found 50.53 3.89 9.09 20.79 IR SDectrum (KBr) • • - OH band at 3450 cm'1 - NH band at 3240 cm'1 - CH bands at 3150, 3020 and 2930 cm'1 - CO bands at 1700 cm1 (acid) and 1610 cm'1 (lactam) - main bands at 1500, 1450, 1330, 1195, 770 and 720 cm1, from 2-aminocarbonyl-3- (2-formyl-1-pyrrolyl) thiophene and 3-mercaptopropionic acid, in a 43% yield. - 21 EXAMPLE 10 : 6-METHYLAMINO-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE: Ο H ml of 35% aqueous solution of methylamine are 5 added in a single portion to a suspension of 1.1 g (0.005 mol) of 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[ 1,2-a]thieno[2,3-f][1,4]diazepine in 20 ml of water, and. the reaction mixture is then stirred for 4 hours at room temperature. The product is gradually solubilized and then reprecipitates. The precipitate is drained, washed with water, dried and recrystallized. 0.7 g of 6-raethylamino-5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine is obtained in the form of white crystals, melting point 146°C (ethyl ether).

Yield : 60% Elemental analvsis : C% H% N% S% Calculated 56.63 4.75 18.01 13.74 20 Found 56.28 4.51 17.91 13.18 IR spectrum fKBr) : - NH bands at 3320, 3250 and 3180 cm-1 - CH bands at 3040, 2980 and 2900 cm'1 - CO band at 1625 cm1 - main bands at 1550, 1495, 1440, 1320, 1100, 770 and 710 cm'1.

EXAMPLES 11 - 19 : Using procedures similar to that described in Example 10, the following derivatives were prepared: - 22 11 ) 6-ETHYLAMINO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 152eC (ethyl ether), Elemental analysis : C% H% N% S% Calculated 58 .28 5.3 16.99 12.96 Found 58 .21 5.26 16.58 12.48 IR spectrum (KBr) • • - NH bands at 3290 and 3150 cm'1 - CH bands at 3050, 2960 and 2860 cm’1 - CO band at 1630 cm'1 - main bands at 1550, 1490, 1450, 1320, 1200, 760 and 720 cm'1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno15 [2,3-f][l,4]diazepine and ethylamine, in a 72% yield. 12) 6-PROPYLAMINO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 130’C (ethyl ether), Elemental analysis : C% H% N% S% Calculated 59 .75 5.78 16.08 12.27 Found 59 .63 5.82 15.95 12.13 IR spectrum (KBr) • • - NH bands at 3340, 3260 and 3170 cm'1 - CH bands at 3100, 3010, 2960 and 2860 cm'1 - CO band at 1625 cm'1 - main bands at 1540, 1495, 1435, 1330, 1095 and 740 cm'1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[ 1,2-a]thieno[2,3-f][1,4Jdiazepine and propylamine, in an 85% yield. - 23 13) 6-PYRROLIDINO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 191eC (ethyl ether), Elemental analysis : Calculated Found C% 61.52 61.62 H% 5.53 5.41 N% 15.37 15.35 S% 11.73 11.79 IR spectrum (KBr) • • - NH bands at 3260 and 3190 cm'1 - CH bands at 3050, 2960 and 2800 cm'1 - CO band at 1620 cm'1 - main bands at 1550, 1495, 1390, 1305, 1125, 870 and 710 cm-1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno15 [2,3-f][1,4]diazepine and pyrrolidine, in a 93% yield. 14) 6-PIPERIDINO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 178’C (ethyl ether), Elemental analysis j C% H% N% S% Calculated 62.69 5.96 14.62 11.16 Found 62.65 5.96 14.57 11.20 IR spectrum (KBr) ! - NH bands at 3260 and 3170 cm*1 - CH bands at 3050, 2940, 2860 and 2810 cm*1 - CO band at 1640 cm'1 - main bands at 1550, 1500, 1460, 1310, 1230, 1150, 980, 770, 740 and 720 cm'1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno30 [2,3-f][1,4]diazepine and piperidine, in an 89% yield. - 24 15) 6-MORPHOLINO-5,6-DIHYDRO-4-OXO-4HPYRROLO[l,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of transparent crystals, melting point 198°C (ethyl ether), Elemental analvsis : C% H% N% S% Calculated 58 .11 5.22 14.52 11.08 Found 57 .92 5.23 14.46 10.95 IR spectrum (KBrl • • - NH bands at 3270 and 3170 cm'1 - CH bands at 3050, 2950, 2930 and 2840 cm'1 - CO band at 1640 cm'1 - main bands at 1500, 1460, 1310, 1120, 990, 875 and 715 cm'1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno15 [2,3-f][l,4]diazepine and morpholine, in a 92% yield. 16) 6-CYCLOPROPYLAMINO-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 185’C (ethyl ether), Elemental analvsis : C% H% N% S% Calculated 60.21 5.05 16.20 12.36 Found 60.67 5.30 15.87 11.90 IR spectrum (KBr) s - NH bands at 3340, 3260 and 3150 cm'1 - CH bands at 3020, 2960 and 2880 cm*1 - CO band at 1630 cm'1 - main bands at 1540, 1490, 1460, 1370, 1290, 1120, 870, 790, 735 and 720 cm'1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno30 [2,3-f][1,4]diazepine and cyclopropylamine, in an 86% yield. it 911011 - 25 17) 6-(4-ETH0XYCARB0NYLPIPERAZIN0)-5,6-DIHYDR04-OXO-4H-PYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 180°C (ethyl ether), Elemental analysis • • C% H% N% S% Calculated 56.65 5.59 15.54 8.89 Found 56.76 5.48 15.47 8.78 IR spectrum (KBr) : - NH bands at 2260 and 3160 cm1 - CH bands at 3110, 2980 and 2810 cm1 - CO bands at 1690 cm1 (ester) and 1640 cm'1 (lactam) - main bands at 1515, 1495, 1250, 1225, 985, 870, 770 and 710 cm1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine and 4-ethoxycarbonylpiperazine, in an 80% yield. 18) 6-(4-PHENYLPIPERAZINO)-5,6-DIHYDRO-4-OXO-4H20 PYRROLO[l,2-a]THIENO[2,3-f ] [1,4]DIAZEPINE, in the form of white crystals, melting point 150’C (ethyl ether), Elemental analysis : C% H% N% S% Calculated 65.91 5.53 15.37 8.8 25 Found 65.31 5.59 14.98 8.52 IR spectrum (KBrl : - NH bands at 3300 and 3220 cm1 - CH bands at 3120, 3090, 2980, 2930 and 2820 cm1 - CO bands at 1495, 1445, 1305, 1050, 770 and 730 cm1, - 26 from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine and N-phenylpiperazine, in a 76% yield. 19) 6-BENZYLAMINO-5,6-DIHYDRO-4-OXO-4H5 PYRR0L0[1,2-a]THIEN0[2,3-f][1,4]DIAZEPINE, in the form of white crystals, melting point 161eC (ethyl ether), Elemental analvsis : C% H% N% S% Calculated 66 4.89 13.58 10.36 10 Found 65.85 5.56 13.27 10.27 IR spectrum (KBr) : - NH bands at 3340 and 3200 cm1 - CH bands at 3080 and 2900 cm'1 - main bands at 1550, 1500, 1460, 1130 and 720 cm1 from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine and benzylamine, in a 72% yield.

EXAMPLE 20 J ,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2-a]THIENO[2,320 f][1,4]DIAZEPINE: g (0.0028 mol) of sodium borohydride is added in small portions to a solution of 2 g (0.007 mol) of 6piperidino-5,6-dihydro-4-oxo-4H-pyrrolo [ 1,2 -a ] thieno[2,3-f] [1,4] diazepine in 120 ml of methanol, and the reaction mixture is stirred at room temperature for 15 minutes and then heated to reflux for 30 minutes. The >t 911011 -27methanol is then removed under vacuum and the solid residue ground in 200 ml of water. The precipitate is drained, washed with water, dried and recrystallized. 1.2 g of 5,6-dihydro-4-oxo-4H-pyrrolo[l,2-a]5 thieno[2,3-f][1,4]diazepine are obtained in the form of white crystals, melting point 191eC (ethyl ether).

Yield : 84% Elemental analysis : C% H% N% S% 10 Calculated 58.81 3.95 13.72 15.70 Found 58.70 3.97 13.64 15.54 IR spectrum (KBr) • • - NH bands at 3230 and 3160 cm1 - CH bands at 3110 , 3030 and 2890 cm1 15 - CO band at 1635 cm1 - main bands at 1540, 1490, 1450, 1330, 1195, 790, 755 and 730 cm’1 EXAMPLE 21 : 6-ACETONYL-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2-a] 20 THIENO[2,3-f][1,4]DIAZEPINE: g (0.0045 mol) of 6-hydroxy-5,6-dihydro-4-oxo4H-pyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine is added in a single portion to an emulsion of 20 ml of acetone in 10 ml of 10N sodium hydroxide, and the reaction mixture is stirred vigorously at room temperature for 3 hours.

The acetone is then removed under vacuum and 100 ml of water are poured onto the liquid residue. The yellow - 28 precipitate obtained is drained, washed with water and recrystallized. 0.7 g of 6-acetonyl-5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine is obtained in the form of white crystals, melting point 268°C (isopropanol ) .

Yield : 60% Elemental analysis : Calculated Found C% 59.98 59.78 H% 4.65 4.72 N% 10.76 10.64 S% 12.32 11.96 IR SDectrum (KBr) • • - NH bands at 3270 and 3150 cm'1 - CH bands at 3040, 2980 and 2880 cm'1 - CO bands at 1700 cm'1 (ketone) and 1640 cm'1 (lactam) - main bands at 1540, 1490, 1455, 1380, 1140, 765 and 720 cm’1 EXAMPLES 22 to 24 : Using procedures similar to that described in Example 21, the following derivatives were prepared: 22) 6-(3-METHYL-2-OXO-1-BUTYL)-5,6-DIHYDRO-4-OXO4H-PYRROLO[l,2-a]THIENO(2,3-f][1,4]DIAZEPINE, in the form of white cry^&ls, melting point 172*C (ethyl ether), Elemental analysis • • C% H% N% S% Calculated 62.48 5.59 9.71 11.12 Found 62.39 5.44 9.88 10.89 - 29 IR spectrum (KBr) : - NH bands at 3290 and 3130 cm1 - CH bands at 3140, 3100, 3000 and 2950 cm1 - C=O bands at 1715 cm'1 (ether) and 1645 cm1 (lactam) - main bands at 1500, 1340, 1170, 960, 870 and 745 cm1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine and isopropyl methyl ketone, in a 16% yield. 23) 6-PHENACYL-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2a]THIENO[2,3-f ] [ 1,4]DIAZEPINE, in the form of white crystals, melting point 214*C (ethyl ether), Elemental analvsis • • 15 C% H% N% S% Calculated 67.06 4.38 8.69 9.94 Found 66.99 4.44 8.69 10.20 IR spectrum (KBrl : - NH bands at 3280 and 3170 cm1 - CH bands at 2960 and 2830 cm1 - CeO bands at 1690 cm'1 (ketone) and 1655 cm1 (lactam) - main bands at 1490, 1450, 1140, 770 and 695 cm1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine and acetophenone, in a 15% yield. 24) 6-(4-FLUOROPHENACYL)-5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE, in the form of yellow crystals, melting point 250’C (ethyl ether), - 30 Elemental analysis : C% H% N% S% F% Calculated 63 .51 3.84 8.23 9.41 5. 58 Found 65 .98 3.65 8.15 9.62 5. 39 IR spectrum (KBr) • • - NH bands at 3280 and 3180 cm - CH bands at 3000, 2900 and 2840 cm'1 - C=O bands at 1670 cm'1 (ether) and 1630 cm1 (lactam) - main bands at 1480, 1435, 1140, 1110, 760 and 710 cm'1, from 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno— [2,3-f][1,4]diazepine and para-fluoroacetophenone, in a 16% yield.

EXAMPLE 25 : 6-(2-HYDROXYPROPYL)5,6-DIHYDRO-4-OXO-4HPYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE: 0.58 g (0.0152 mol) of sodium borohydride is added to a solution of 1 g (0.0038 mol) of 6-acetonyl20 5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f](1,4]diazepine in 250 ml of methanol, and the reaction mixture is then stirred at room temperature for 3 hours. The methanol is then removed under vacuum and the solid residue is ground in 200 ml of water. The precipitate obtained is drained, washed with water, dried and recrystallized. - 31 0.8 g of 6-(2-hydroxypropyl)-5,6-dihydro-4-oxo4H-pyrrolo[l,2-aJthieno[2,3-fJ[l,4]diazepine is obtained in the form of white crystals, melting point 170°C (ethyl ether).

Yield : 80% Elemental analysis : C% H% N% S% Calculated 59.52 5.38 10.68 12.22 Found 59.55 5.18 10.58 12.06 IR SDectrum fKBrl • • - OH band at 3420 cm1 - NH bands at 3360 and 3180 cm1 - CH bands at 3030 , 2970 and 2860 cm'1 - CO band at 1625 cm1 - main bands at 1485, 1440, 870, 765 and 710 cm EXAMPLE 26 : - [ (ETHOXYCARBONYL (CYANO) METHYL )-5,6 -DIHYDRO-4OXO-4H-PYRROLO[1,2-a]THIENO[2,3-f][l,4]DIAZEPINE: ml of ethyl cyanoacetate and 0.5 ml of tri20 ethylamine are added to a solution of 1 g (0.0045 mol) of 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo [ 1,2-a] thieno [2,3f ] [l,4]diazepine in 100 ml of acetonitrile, and the reaction mixture is then stirred at room temperature for 12 hours. The acetonitrile is then removed under vacuum. The residue obtained is ground in 200 ml of water. The precipitate obtained is drained, washed with water, dried and recrystallized. - 32 0.7 g of 6-[ethoxycarbonyl(cyano)methyl]-5,6dihydro-4-oxo-4H-pyrrolo[ 1,2-a] thieno[ 2,3-f ] [ 1,4 ]diazepine is obtained in the form of yellow crystals, melting point 195*C (ethyl ether).

Yield : 49% Elemental analvsis : C% H% N% S% Calculated 57.13 4.16 13.33 10.17 Found 57.07 4.24 13.28 10.06 IR spectrum (KBr) : - NH bands at 3340, 3280 and 3180 cm1 - CH bands at 3120 and 2990 cm'1 - C-N band at 2230 cm1 - CO bands at 1720 cm'1 (ether) and 1670 cm1 (lactam) - main bands at 1595, 1465, 1435, 1365, 1300, 1240, 1090, 875 and 750 cm1 EXAMPLE 27 s 6- [ (METHOXYCARBONYL (CYANO) METHYL ] -5,6-DIHYDRO-420 OXO-4H-PYRROLO[l,2-a]THIENO[2,3-f][1,4]DIAZEPINE, prepared as described in Example 26 from 6-hydroxy-5,6-dihydro4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine and methyl cyanoacetate.

EXAMPLE 28 : 6-(1-( ETHOXYCARBONYL)ACETONYL]-5,6-DI HYDRO-4-0X04H-PYRROLO[1,2-a]THIENO[2,3-f](1,4]DIAZEPINE: H COCH3 C-O-CH2-CH3 - 33 Using the procedure described in Example 26, starting with 1 g of 6-hydroxy-5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine and 2 ml of ethyl acetoacetate, 0.7 g of 6-[1-(ethoxycarbonyl)5 acetonyl]-5,6-dihydro-4-oxo-4H-pyrrolo[1, 2-a]thieno[2,3-f][1,4]diazepine was obtained in the form of white crystals, melting point 196°C (ethyl ether).

Yield : 47% Elemental analysis : C% H% N% S% Calculated 57 .82 4.85 8.43 9.65 Found 57 .75 4.78 8.37 9.85 IR sDectrum (KBr) • • - NH bands at 3270 and 3200 cm'1 15 - CH bands at 3120, 2940 and 2870 cm*1 - CO bands at 1710 and 1635 cm'1 - main bands at 1545, 1495, 1300, 1255, 1030 and 790 cm'1 EXAMPLE 29 s ,6-DIHYDRO-4H-PYRROLO[l,2-a]THIENO[2,3-f][1,4]DIAZEPINE AND ITS HYDROCHLORIDE : A solution of 5.3 g (0.024 mol) of 6-hydroxy-5,6dihydro-4-oxo-4H-pyrrolo [ 1,2-a ] thieno [2,3-f][l,4] diazepine in 400 ml of dichloromethane is added in small portions to a suspension of 3.66 g (0.096 mol) of lithium aluminum hydride in 20 ml of ethyl ether. The reaction mixture is stirred at room temperature for 30 minutes and - 34 then heated to reflux for 6 hours. After cooling, the solution obtained is poured onto 250 g of ice. The emulsion formed is drained and the organic phase is then separated after settling has taken place. The aqueous phase is extracted with 200 ml of dichloromethane. The organic phases are combined, dried over calcium chloride, purified with animal charcoal and evaporated under vacuum. The residual oil is dissolved in 300 ml of ethyl ether and a stream of gaseous HCl is bubbled into this ethereal solution for 15 seconds. The precipitate is drained, washed with ether and recrystallized. 3.2 g of 5,6-dihydro-4H-pyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine are thereby obtained in the form of beige crystals, melting point 260’C (isopropanol).

Yield : 59% Elemental analvsis : C% H% N% Cl% Calculated 52.98 4.89 12.36 15.64 Found 53.20 4.98 13.93 15.46 IR spectrum (KBr) s - CH bands at 3100 and 3080 cm-1 - broad band (NH2+C1) from 2900 to 2470 cm1 - main bands at 1565, 1550, 1480, 1445, 1296, 1190, 1066, 740 and 720 cm'1.

EXAMPLE 30 s -(p-TOLYLSULFONYL)-5,6-DIHYDRO-4H-PYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE : - 35 An excess of para-toluenesulfonyl chloride is added to a solution of 1 g (0.0053 mol) of 5,6-dihydro4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine in 10 ml of pyridine, and the reaction mixture is then stirred at room temperature for one hour. The pyridine is then removed under reduced pressure and the oil residue obtained is ground in 100 ml of water. The emulsion formed is extracted with 3 times 100 ml of ethyl ether. The organic phases are separated after settling has taken place, combined, dried, washed with acidulated water, dried over magnesium sulfate and evaporated under vacuum. The solid residue is recrystallized. 0.4 g of 5-(p-tolylsulfonyl)-5,6-dihydro-4Hpyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine is thereby15 obtained in the form of yellow crystals, melting point 165’C (ethyl ether).

Yield : 22% Elemental analysis : C% H% N% S% 20 Calculated 59.28 4.68 8.13 18.62 Found 59.21 4.72 8.05 18.44 IR spectrum (KBr) : - CH bands at 3100 and 2830 cm'1 - main bands at 1580, 1490, 1440, 1355, 1165, 1090, 730 and 660 cm'1.

EXAMPLE 31 : -ACETYL-5,6-DIHYDRO-4-OXO-4H-PYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE CH2 - 36 A suspension of 0.5 g of 5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine (Example 20) in 20 ml of acetic anhydride is heated to reflux for 2 hours. The acetic anhydride is then removed under vacuum.

The oil residue is ground in 100 ml of water and the emulsion obtained extracted with ethyl ether. The ether phases are dried over magnesium sulfate and concentrated under reduced pressure. The residual oil which crystallizes on addition of petroleum ether is recrystallized. 0.4 g (66%) of 5-acetyl-5,6-dihydro-4-oxo-4Hpyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine is thereby obtained in the form of yellow crystals, melting point 157°C (ethyl ether).

Elemental analysis : C% H% N% S% Calculated 58.48 4.06 5.69 12.99 Found 58.48 5.72 5.72 13.05 IR spectrum (KBr) : - CH bands at 3150, 3120 and 3100 cm*1 - C=0 bands at 1695 and 1660 cm'1 - main bands at 1540, 1490, 1430, 1345, 1220, 1200, 1150, 770 and 725 cm'1.

EXAMPLE 32 : - (N-PHENYLCARBAMOYL)-5, 6-DIHYDRO-4-OXO-4H25 PYRROLO[1,2-a]THIENO[2,3-f][1,4]DIAZEPINE ! - 37 A solution of 1 g of 5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][l,4]diazepine (Example 20), 0.5 ml of phenyl isocyanate and 1.36 ml of triethylamine in 200 ml of toluene is heated to reflux for 2 hours. The reaction medium is then concentrated under reduced pressure and thereafter taken up with water and extracted with ethyl ether.

The ether phases are dried and then concentrated under reduced pressure. 1 g (63%) of 5-(N-phenylcarbamoyl)-5,6-dihydro4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4 Jdiazepine is obtained in the form of white crystals, melting point 176eC (ethyl ether).

Elemental analysis : C% H% N% S% Calculated 63.14 4.05 12.99 9.91 Found 63.07 4.08 13.07 9.92 IR spectrum (KBr) : - NH bands at 3260 and 3220 cm'1 - CH band at 3120 cm'1 - C=O band at 1710 cm1 - main bands at 1590, 1550, 1490, 1430, 1195, 770 and 715 cm-1 EXAMPLE 33 : -(N-PROPYLCARBAMOYL)-5 ,6-DIHYDRO-4-OXO-4HPYRROLO[l,2-a]THIENO[2,3-f][1,4]DIAZEPINE : II I o c = 0 NH - CH2CH2CH3 - 38 The procedure is as for Example 32, replacing phenyl isocyanate by n propyl isocyanate.

-(N-Propylcarbamoyl)-5,6-dihydro-4-oxo-4Hpyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine is obtained in the form of white crystals, melting point 120’C (ethyl ether), in a 63% yield.

Elemental analvsis : C% H% N% S% Calculated 58 .11 5.22 14.52 11.08 10 Found 58 .15 5.19 14.48 11.16 IR soectrum (KBr) • • - NH band at 3290 cm'1 - CH bands at 3070, 3030, 2970 and 2880 cm'1 - C=O bands at 1690 and 1625 cm'1 - main bands at 1485, 1430, 1380, 1330, 1200, 1210, 775 and 700 cm1.

The NMR parameters relating to the derivatives which are the subject of Examples 1 to 33 are collated in the tables below. - 39 TABLE (0 M Φ (0 r—( fi a) x: •P o +j 0» c •P Ό c o a η φ p p o u UJ o p (Q φ M > <0 •P i—l •P 3 S 8 P «Η Φ •a O' 3 φ •P n £ •P 0 rp 0 i—1 P o O' 3 Φ •H JS P -P 3 i—H 3 Φ •P P Ό to Φ P 3 Φ •P •P A S s § u H Λ Λ a w s ·§ z Other protons in CM sO X O © cn cn m X o O © cn m ·· ·· co X X U O s- ·♦ · · cm cn X X o u cm ·=τ in — in cn -=r t— ...» rn co <- o CM CM cn X XX o cj o e— © 5 — • cn ·· ·· cn X X o CJ CM CM CM in · • in • · in CM X X sO cj CJ £ in • in in cn in so o· in co zr * in SO in . in r- «sr • in 5 cm in co t- C— cn o- t— CM ·» e— GO cn • c— CM e- CM s r- t— o • M- co © P- c— o * c— e- © » e— co o * e* 3 in CM sO © cn sO σ CM • sO GO CM * Ό m CM • © CM CM * © Μ- Β in CM « so o in * SO OS CM SO CO CM © © cn so CM CM » © £ CM t— SO in • e- P- in P^ SO in c- sO m e- co in P- x CM • t— O CM • c— CO • e*- t— e- C— P- e— e- Solvent Q cn 8 u cn 8 cj cn c-4 8 cj cn f-4 8 u cn —H u Q CJ as X o cn X 8 cn X o CM X 8 cn X o CM X cj CM X 8 cn cn X X tA cj in X SO CJ CM X 8 Example No. - CM cn in sO - 41 ·· u (0 I—) os O P TABLE II co Φ rH a x H o CD Φ ► •P •P io ► •P P Φ Ό Φ Λ P O P cn •P +) (0 *—1 Φ P to P Φ P Φ P io ft Other protons CH : CH : 3-34 o « co Ό § *- cu co co « r- r- in X SO CJ OH : 12.19 o co CH : t— p* « co • · CO X o vO CJ CM X CJ 3- CJ CM X CJ XT cn in X os p- S * « • vO OS \O σ> ao Os SO σ» p* p* X • • ιή in in ο rsj os S' Sf o X • t— p* e- • a co s CO CM « CM vO so vO OO a· t*· CVl cm X * • * SO vO vO CM sr tn CM <40 σν vO X • « *- r- e- P- co o in CM X * t— p- e- P 3 Φ m CO *-4 Sx f-1 •H 0 £ cj a CJ a CJ (0 m X in g CJ (S X SO CM CM X CJ CJ CJ CM X CJ Φ ft a · t- CO OS a o X X u - 42 ιι— η* * ic y ι i(n i Other protons o CM • CM CO X u e— — co t— • · CM CM ·· ·· O' CO O Ό X X · ‘ Ο O — ·· ·· • · CM CO XX X 2 υ u t*- • Ό P- Ό CO CO • » — · o CM CM CO XXX 2 υ υ e— cm » CM co co Ό Ό • fc CM »- CM CM X X U U CM xo in in in *— m • * · CM CM ·“ CM CM X X o O co Ό X in • in in • in X0 =r -=r * -=r i co co e- \O c* x£> fc xO CM t— « X0 x£> CO t- σ» X CM CO • C++ co o » p- co o • c* co o • P- CM O » e- S’ CM lO co • xO co x£> C— CM • Ό CO CM « xo CM * Ό co . Ό co Ό CO V*— Ό C*· ΧΛ ηι a· co ·- O' in • c— CO in « f— CM in » t— in « c* X O' in c— c- • p- Ό « C— Ό • r— co • r* Solvant 1 co u co 8 υ co £ υ co o a u s OS co X υ co X c_> CM X υ CO X u CM X υ CM X υ ) fO i D • ae X X X Example No. o - CM co a· (0 OO ST in C 00 co O P Έ CM 4 \O « P* 0 (0 • * «« ·* M r- vO CM CO O4 4T vo 0 σν CM ¢- Ό CM O 0O vO O k in CO o • 0 O k • • CM C— •a- Lj co • ' OO • 0 k co co CM 00 * ♦ CM CM * CM •=r CM t— « cn r- Φ ·« CM • · k · CM • ♦ A • · ·· *2 ·· P CM « · • · CM £ CM CM CM in ·< tTi O X CM X CM <0 X X X X CM X 0 X X X CJ X u CJ CJ VO X X CM cj 2 CJ CM CJ CM CM CM u 2 CJ u vO 0 σ\ VO in 0 vO VO σν X » • « <=r in •sr in -=Γ e— co ο X vO CM 0 oo s • * * • • 00 e- σν 00 σ* x 1X3 Ο VO Ο co ID σ* CM ο CM Ο co ο co νΟ ιη CM • VO CM CM Ο CM CM k νθ ιη CM VO νθ ιη co co in ο in oo oo CM sf .♦ ιό =t * e— -P Ci Φ ► r-l ω CJ co υ in x CM § in σ* ·· (β i—( M-4 O o CM NMR parameters relating to the derivative of Example - 46 Cd J c •H Ό Φ C •H i o u H H +J Φ (0 oo CM O +J CM CO Φ i-1 & X Cd M-l O CD Φ > •H +J ιβ > •H M Φ σ φ Λ +> Ο +J ο» — C •Η φ +J <-1 <0 g ί-1 Φ Μ Β ο η U Μ ο> Φ C 4-> Μ | Μ 0 <-1 ι—1 Φ 0 Λ «Η Λ Φ 2 Λ 2 +> - 47 Λ <4 j· Λ'· ic y ι ιυ i i Other protons kO co CM X o CM • « CO X o CM CO • · CM CJ CM in co co CM X cj CM t— =r O' t^· • · in X KO CJ OK co co ·· CM X cj o p- Έ nJ CM « . C• « in X kO CJ ^3- CM • « X CJ CO » CM • · CM X CJ o CO • · co X CJ CM % co • · X cj ·· CM X cj CM kO co KO kO oo CO P- o P* s co JT -Ο- =T KO in OK x co CM co \O KO S • • * » co CO 00 CO C- o in KO σ» co CM CM CM o X «„ • • p* r- C- t- t— co in in o 2 CM cm CM co * KO kO κθ κθ κθ CO KO in CM a t- O © © X » * • • KO KO KO \o KO CM OK ao CM OK sr CO in X • « • • e*- t— t— c— t— in KO OK CM 3T 9 00 a ao 3S * • e— fr- e- e-> t— 4-> C CO co Φ w 9 9 ► o s g u £ s CJ to co X CO X cj co X u © co X CJ y § as O C\J X υ 1 u c\ X υ 1 cj = o X υ X u 1 s 1 o 1 CM X υ 1 CJ = 1 CM X cj 1 o CM X CJ 1 Φ rH s* · CM co in 3 o CM CM CM CM CM K 55 H <0 c 0 P 0 P a oo OO in in σ' ·— co t— CM CO CM O' tj o « • • <» · » • co -Jr , r- Φ in sr 45 • · «· • « «· · · · · P ·· • · o CM co co CM CO CO X X X X X X X X o o o CJ o u u o o =r Ό Ό Ό X « in Ό m σ* Ό CM £ Ό « Ό Ό c* c*- M3 σ* Ό a o* Ό Ό © X « « t- C«- C- o oo s CM CM « CM f- Ό Ό © Sf t— CM CM X « « • e- Ό o σ> CM in CM Ό O' Ό X * • C^ Ϊ» ¢- O' Ό O sO Ό CM X • -% l— f- c— P 3 co o co ^4 olv £ o £ υ CQ CO CO ee X o CM X o CM co δ O u z X co u X CM 8 X O O o X u o o « \/ \ / \/ X X X υ u u 1 1 sO t*- 00 § ό CM CM CM K z w Ο P 7.77 6.43 6,27 7.33 9.95 4.17 4.09 - 50 TABLE VII ·· KO Φ r-l & P c Φ ► ·—I o ω Other protons to m co to CM co • · · t— t— CM Ό a· G = « 4T> to X ο ω Ό CM s u Ot cn a CM X o Γ- sr •ST O' X CM CO to 2 w· x =r • to £ at e- s co O' * to TABLE VIII

Claims (26)

1. A pyrrolo[l,2-a)thieno[2,3-f][1,4Jdiazepine of general formula (I): in which: - Ri represents: - a hydrogen atom, - a hydroxyl radical, - a radical of general formula: -0R 5 or -SR 5 in which R s represents: . an alkyl radical containing 1 to 5 carbon atoms in a straight or branched chain, optionally substituted with a phenyl radical or with a group of formula -COOB in which B represents a hydrogen atom or an alkyl radical containing 1 to 5 carbon atoms, or . an aryl radical such as, for example, a phenyl radical, - a radical of general formula: - CH, - C - R« or - CH, - CH - Re 2 |l I 0 OH in which Re represents: . a linear or branched alkyl radical having 1 to 5 carbon atoms, . an aryl radical (optionally substituted with one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups), . an aralkyl radical having 7 to 9 carbon atoms (optionally substituted on the aromatic ring with one or more halogen atoms, alkoxy groups having - 53 1 to 3 carbon atoms or trifluoromethyl groups), - a radical of formula: in which: . R 7 and R e , which may be identical or different, each represent a hydrogen atom, an alkyl radical containing 1 to 5 carbon atoms in a straight or 10 branched chain, a cycloalkyl radical containing 3 to 5 carbon atoms, an aryl radical (optionally substituted with one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups) or an aralkyl radical 15 having 7 to 9 carbon atoms (optionally substituted on the aromatic ring with one or more halogen atoms, alkoxy groups having 1 to 3 carbon atoms or trifluoromethyl groups), or . R 7 and R e , together with the nitrogen atom to 20 which they are linked, form a five- or sixmembered heterocyclic radical optionally containing another hetero atom such as, for example, a second nitrogen atom or an oxygen atom, and optionally substituted with a linear or branched 25 alkyl radical having 1 to 5 carbon atoms, with an alkoxy carbonyl radical having 2 to 6 carbon atoms or with an aryl radical, an aralkyl radical having 7 to 9 carbon atoms, a heteroaryl radical or a diaralkyl radical such as, for example, a 30 benzhydryl radical (these radicals optionally being substituted on the aromatic ring or rings with one or more identical or different substituents selected from halogen, hydroxyl, alkyl or alkoxy having 1 to 4 carbon atoms, nitro or 3 5 tri fluoromethyl), or - an alkyl radical containing 1 to 5 carbon atoms, - 54 optionally substituted with one or more radicals selected from the group composed of hydroxyl, oxo and cyano radicals and alkoxycarbonyl radicals containing 2 to 4 carbon atoms; R 2 represents: - a hydrogen atom, - an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, - an arylsulfonyl radical in which the aryl group is optionally substituted with an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, - an alkyl carbonyl radical having 2 to 3 carbon atoms, - a radical of general formula: JNHRg in which . Rg represents a linear or branched alkyl radical having 1 to 6 carbon atoms or an aryl radical or aralkyl radical having 7 to 9 carbon atoms (optionally substituted on the aromatic ring with one or more halogen atoms, alkoxy radicals having 1 to 3 carbon atoms or tri fluoromethyl radicals); - R 3 and R a represent: 25 - each simultaneously a hydrogen atom or - together an oxygen atom.

2. A physiologically tolerable salt of a compound of claim 1 with suitable pharmaceutically acceptable acids.

3. The isomers, the diastereoisomers and enantiomers 30 of a compound of claim 1, isolated or in the form of a mixture.

4. A compound as claimed in claim 1 which is 6-hydroxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4Jdiazepine.

5. A compound as claimed in claim 1 which is - 55 6-methoxy-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine.

6. A compound as claimed in claim 1, which is 6-methoxycarbonylmethylmercapto-5,6-dihydro-4-oxo-4H5 pyrrolo[l,2-a]thieno[2,3-f][1,4]diazepine.

7. A compound as claimed in claim 1, which is 6-methylamino-5,6-dihydro-4-oxo-4H-pyrrolo [ 1,2-a ] thieno[2,3-f][1,4]diazepine, as well as its addition salts with a pharmaceutically acceptable inorganic or organic acid. 10

8. A compound as claimed in claim 1, which is 5,6dihydro-4-oxo-4H-pyrrolo [ 1,2-a] thieno [2,3-f][l,4] diazepine.

9. A compound as claimed in claim 1, which is 6-acetonyl-5,6-dihydro-4-oxo-4H-pyrrolo [ 1,2-a]thieno15 [2,3-f][1,4]diazepine.

10. A compound as claimed in claim 1, which is 6-(2hydroxypropyl )-5,6-dihydro-4-oxo-4H-pyrrolo[ 1,2-a]thieno[2,3-f][1,4]diazepine.

11. A compound as claimed in claim 1, which is 20 6- [ethoxycarbonyl (cyano) methyl ] -5,6-dihydro-4-oxo-4Hpyrrolo[1,2-a]thieno[2,3-f][l,4]diazepine.

12. A compound as claimed in claim 1, which is 6-[methoxycarbonyl(cyano)methyl]-5,6-dihydro-4-oxo-4Hpyrrolo[1,2-a]thieno[2,3-f][l,4]diazepine. 25

13. A compound as claimed in claim 1, which is 6-[l(ethoxycarbonyl) acetonyl ] -5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][l,4]diazepine.

14. A compound as claimed in claim 1, which is 5,6dihydro-4H-pyrrolo[1,2-a]thieno[2,3-f][l,4]diazepine, as 30 well as its addition salts with a pharmaceutically acceptable inorganic or organic acid.

15. A compound as claimed in claim 1, which is 5- (p. tolylsulfonyl)-5,6-dihydro-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine. 35

16. A compound as claimed in claim 1, which is 5-acetyl-5,6-dihydro-4-oxo-4H-pyrrolo[ 1,2-a] thieno [2,3-f][1,4]diazepine.

17. A compound as claimed in claim 1, which is 5-(Nphenylcarbamoyl)-5,6-dihydro-4-oxo-4H-pyrroloIE 911011 - 56 [1,2-a]thieno [2,3-f][1,4]diazepine.

18. A compound as claimed in claim 1, which is 6-phenacyl-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno [2,3-f][1,4]diazepine. 5

19. A compound as claimed in claim 1, which is 6-morpholino-5,6-dihydro-4-oxo-4H-pyrrolo[ l,2-a]thieno[2,3-f][1,4]diazepine, as well as its addition salts with a pharmaceutically acceptable inorganic or organic acid.

20. A compound as claimed in claim 1, which is 10 6-pyrrolidino-5,6-dihydro-4-oxo-4H-pyrrolo[1,2-a]thieno[2,3-f][1,4]diazepine, as well as its addition salts with a pharmaceutically acceptable inorganic or organic acid.

21. A process for preparing a compound of general formula (I) as claimed in claim 1, wherein:

15 A - either 2-aminocarbonyl-3-(2-formyl-l-pyrrolyl)thiophene of formula (II): (II) is treated 1) either with a mixture of water and triethylamine, to give the compound of formula (la): » H (la) 2. ) or with an alcohol or a thiol of respective general formulae (III) and (IV): R S OH (III)/ R 5 SH (IV) in which Rj has the same meaning as in the compounds - 57 of general formula (I), to give the compounds of general formulae (lb) and (Ic), respectively: OH OH (lb) (Ic) in which R s has the meaning defined above; 3. ) or with a secondary amine of general formula (V): (V) in which R 7 and R 8 have the same meanings as in the compounds of general formula (I), to give the compounds of general formula (Id): II o R7 R8 (Id) in which R 7 and R e have the same meanings as in the compounds of general formula (I); 4. ) or in an alkaline medium with a methyl ketone of general formula (VI): ch 3 - f - «β (VI) in which Re has the same meaning as in the compounds of general formula (I), so as to obtain the compounds of general formula (If): (If) in which Rg has the same meaning as in the compounds of general formula (I), which can optionally be treated with a sodium borohydride to obtain the compounds of general formula (Ig): CH I OH R6 (ig) in which Rg has the same meaning as in the compounds of general formula (I); B - or the compound of general formula (la) obtained 10 above is treated: 1) either with an alcohol of general formula (III) defined above, to give the compounds of general formula (lb): (lb) in which R 3 has the same definition as in the compounds of general formula (I); 2) or with an amine of general formula (V) defined - 59 above, (Id): to give the compounds of general formula R7 ‘R8 (Id) in which R 7 and R e have the same meanings as in the compounds of general formula (I), which can optionally be treated with sodium borohydride to obtain the compound of formula (Ie): which can optionally be reacted: a) either with an anhydride of general formula (XI) R' 2 - C - 0 - C - R' 2 (XI) a a in which R' 2 represents a methyl or ethyl radical, so as to obtain the compounds of general formula (II): in which R' 2 has the meaning defined above; - 60 b) or with an isocyanate of general formula (XII): Rg - N = C = 0 (XII) in which R s has the same meaning as in the compounds of general formula (I), so as to obtain the compounds of general formula (Im): in which Rg has the same meaning as in the compounds of general formula (I); 3) or, in an alkaline medium with a methyl ketone of general formula (VI) defined above, to give the compounds of general formula (If): in which Re has the same meaning as in the compounds of general formula (I); 4) or, in the presence of triethylamine, with a compound of general formula (VII): Alk- -OAlk' (VII) in which Aik and Aik', which may be identical or IE 91101 1 - 61 10 different, each represent an alkyl radical having 1 to 3 carbon atoms, to give the compounds of general formula (Ih): (Ih) in which Aik and Aik' have the meanings defined above; 5. ) or, in the presence of triethylamine, with a compound of general formula (VIII): h 2 c; CN C-OAlk II o (VIII) in which Aik has the meaning defined above, to give the compounds of general formula (Ii): OH 0 in which Aik has the meaning defined above; (Ii) 6. ) or with LiAlH 4 , to give the compound of formula (Ij ) s (Ij ) - 62 which, when treated a) either with a stoichiometric amount of an inorganic or organic acid, gives the corresponding acid-addition salt; b) or with an alkyl iodide of general formula (IX): R 2 I (IX) in which R 2 represents an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, gives, depending on the stoichiometric ratio (IX)/(Ij): either the compound of general formula (IkJ: in which R 2 has the meaning defined above, or the dialkylammonium iodide of general formula c) or with a halogenated compound of general formula (X): Hal-R' 2 (X) in which R' 2 represents an arylsulfonyl radical - 63 in which the aryl group is optionally substituted with an alkyl radical having 1 to 5 carbon atoms in a straight or branched chain, gives the compounds of general formula (Ik 2 ): in which R' 2 has the meaning defined above, the compounds of general formula (la) to (Im) forming part of the invention and being special cases of the compounds of general formula (I). 10 22. A pharmaceutical composition containing as active principle a derivative as claimed in claims 1 to 20, alone or in combination with one or more pharmaceutically acceptable, non-toxic, inert excipients or vehicles.

23. The pharmaceutical composition as claimed in 15 claim 22, presented in a form suitable, in particular, for the treatment of stroke, of normal or pathological cerebral ageing, of ischemic syndromes, of disorders linked to hypoxemia, of hypercholesterolemia, hyperlipidemia, hypertriglyceridemia, hyperglycemia and 20 hypertension and of disorders linked to these conditions.

-6424. A compound substantially as hereinbefore described with reference to the Examples.

25. A process substantially as hereinbefore described with reference to the Examples.

26. A composition substantially as hereinbefore described with reference to the Examples.